Selective operation of systems by a unit cylinder



June 14, 1949. A. N. MlLsTER 2,473,168

SELECTVE OPERATION SYSTEMS BY A UNI'TVCYLINDER Y Filed nep. 14, 1946 Imi 4'; 5 7 5g D FIG. l. l o i INVENTORI .ARTHUR N. MlLsTER ATToR Patented June 14, 1949 y @473968.31 UEZQPERATIONYOF' SYS? Application Decemben 14, 1946; S-l-ial No. 716.26??

This invention relatestoactuatingmans @0r the. Opposite. endroffstgm, lseats. al @Gunterapplurality 0f'pr.e$.Sure-. fluid devd...da1diitsy9bn @nein extension I8.; The lengmof.44 stem. .23e 1.1.1j iectsdsftQ-.pmvde means. for-selgtivdly Qpgrfatirlg; relation of the length of' the.. bore. in. which, the the: sevrdlrddvicedby pressllrdluid Qmdmddin; stem;y is=placedz is such-.thabvalve 'fl- Will blopnl adsingle mastencylirlden. 5 when dalvq l: is in intlmalse colfltactg,With-x segu;

In the drawing?. |19;

Figure 1: am. elevationall.. sdcipbQnal: View Qi 'allg Th@ easing is. further provided. with a boss. pneferreckembodiment@ the invention; Whifh. is.. arranged. onpoditel bass lf. and; has. a

'Egdre' 4 is an@ elevatipnal. View taken. sulqf.. meter-,11 off-blgake adsembly 2,8.. A suitalqlettnsf sndnlally-aflongr-t-he line lfd-mi Elgar@ 2.0" with. which 0.116. qnd'. Clif:

Referring nowltnmhezdrawings. nu .eral l: 132.51 .lldstf 0.13111@ @DSL-$19 if;namesr;d adding wh-iehme. mQtQr l'f brad@ ad: msm. is.Y mused;- and; sendas as; 2f. nedery... Slllldldld.opel.atingV fluid.; el. g a-L Qylndrical member 211s inlegnally, am l1.; med.. ddl/me., il @Igan @l-.tl .other QSMIQS; thelowerwallioffthefhgusingf n-.d .2o ll@ subdlituedl eeffgri neQiProcably-mmntdd.-i.. A* @filever-l@@QMQQEQQWLQQ@ Bisposediwithm. cylmclr.` 3. id al.: msm@ @pmu @...Sfp.i;r;,1df1z31@hymefllill lol. 51. lifl'flflk vv-ltha Sullldll@`v paQliing: Cup 51 tof, pyev nt provided with forked members a1, 31, for dpudgf. 1ddlage-pdsn-pidtm 4. "Ihdpistonl 2.4.5.9.. lilgftlldyllllr afnslpo .rdldtylg 63.9.1.1: #der vided. wilslrar ning-'typecimulalz hrlqllhbhfa.. .38, f. @.dfl whichdvdlvel;sengdeahlm Ya fork 31, 31- m., a simular lished wadll'sltlf. @neen .y spring Sgam-in dshdsf vsfasdhserA tif and. tlf.; Qlv endf of? bhedpring sedts-v m d.y dished A.; valyd lll.- is'seQur-.ed tQlheed-h Wafl .Q idengaf-gealle vif-illuI ring ypeirc arflcdlmst, tit-semaine olgsed and; QL Cyln 3; Piston 4. isproviplesl; with a. n. ...eclzfzn whim has a circular?.- Valye 13mm-1aed therein'. engagerdl 35.-, able.; mth a'. valve seals. |41 fome@ on the right 35 Th@ mrt 4231.1@ lll@ d@ Wall.- Off @linden 3f han@ fade o f: a.. bQss. lf5 integral the. SQ .Ilm-@51. 12o.- allQw th@ flied 110W. 0f fluid bs: l'.. A complement@ Qirularfvalve 1.6, arrange twdentheresewoi 44 and the Chamber; in Cylllr in a boss l1 integral wit... the; end Wall cy der 3 betweenfthe. PSlQn Ladhd Valve. der 3. The valve.: 161. senagddble will?. a.. Seat d. d H. a din. the; @Qmvlelae relfamrmgdou. extensiqn. Mfgalpldgflmllmadd .40 all@ l di@ Seated. ddintdcdsipg l. n. L3., .lesptwslyz sitlr'g. of 'p iusfo l here which hpues and: gul@ valveJ 1.-. A head 2.2, Q11. 0.135%; received? 11.1 a@ Sui-tabl@- flentll@ irlA v other' end. of valve stem, 2:12 .engages in the oounteltbone. .aff beds I5 the le. lh. 9,@ 'valve Stem 2l.; ucl-.1. that it. isglze t. 'lasngth of thepasage .in mslm. 4d. is length insures, that. when Seat. 1.4,. @n vv. are inl intimated. Qnbasst, Vall/d1 will he, imm its seat l A valve- 2,3'y arranged in dslsldlqlel PO12?.

the right and through the action of yoke 36, 36, forks 31, 31 and pins 38, 38 urges cylinder 3 toward the left, causing valve I3 to engage seat I4 to prevent uid escaping to the reservoir. The end of valve stem 2l engages a shoulder of the counterbore in boss I5, thus disengaging valve 'I from its seat B. Pressure iiuid developed within cylinder 3, together with the action of spring 9, firmly seats valve H' against seat I2 preventing any escape of pressure fluid through the bore in the end wall of cylinder 3 and thus causing entrapped fluid within cylinder 3 to be forced out of cylinder 3 through the bore in piston 4 and thence through tting 33 and conduit 26 into brake motor 21 when said entrapped fluid is subjected to pressure. When lever 34 is released by the operator, the combined action of the return spring of brake assembly 28 and spring 9 in cylinder 3 causes the apparatus to assume the position shown.

If it is desired to actuate brake motor 3l, then the left hand lever 34 is moved counter-clockwise or to the left and through the action of yoke 36 and pins 38 acting on the rear or left hand side of piston 4, cylinder 3 is moved to the right by both the friction between the piston and cylinder and the force applied to the fluid within cylinder 3. This completely seats and seals the surface i 8 against seat I9 of boss I8. Valve stem 23 now comes in contact with a shoulder of the counterbore in boss i8 and thus the valve II and valve seat I0 are opened. As pressure increases on the fluid in cylinder 3 and combines with the action of spring 9, valve 1 is seated on seat 6 to prevent the escape of any fluid through the bore in piston 4.

Pressure uid is thereafter forced through the bore in the end of cylinder 3 and then through the appropriate fitting 29 and conduit 30 to the brake motor 3I. Release of the hand lever 3l by the operator permits the system to return to equilibrium by the combined action of the return springg of brake assembly 32 and spring 9 in cylinder Having fully described my invention, that which I claim as novel and desire to protect by Letters Patent of the United States is:

1. A mechanism for actuating a plurality of hydraulic systems comprising a movable cylinder device; a piston movable in said cylinder; means for selectively actuating said piston or cylinder each independently of the other; a pair of motors; means for establishing communication between said motors and said piston-cylinder device; valve means in each of said communication means; and means for selectively actuating said motors by actuating either said piston in combination with one of said valve means or said cylinder in combination with the other of said valve means.

2. A mechanism for selectively operating a pair of devices comprising a support; a cylinder reciprocably mountedin said support; a piston in said cylinder; a pair of motors; means for establishing communication between said piston-cylinder mechanism and each of said motors; valve means in each of said communication means; and means for selectively actuating said motors by actuating either said piston in combination with one of said valve means or said cylinder in combination with the other of said valve means.

3. A mechanism for selectively actuating a plurality of devices comprising a cylinder; a piston in said cylinder; a support in which said cylinder is reciprocably mounted; two systems to be actuated; means for establishing communication between oneof said systems and said cylinder through said piston; means for establishing communication between the other of said systems and said cylinder; and valve means associated with each of said communication means for enabling fluid to be entrapped in one of the systems and for selectively actuating said systems when said piston and cylinder are selectively reciprocated relative to each other.

4. A mechanism for selectively actuating a plurality of devices comprising a casing; a cylinder reciprocably mounted in said casing; a piston reciprocably mounted in said cylinder; a pair of systems; means for establishing communication between the interior of said cylinder and said systems; valve means associated with said piston and cylinder mechanism actuated upon relative movement of said piston and cylinder; and means for selectively relatively moving said cylinder and said piston to thereby selectively actuate said system.

5. A mechanism for selectively actuating a plurality of devices comprising a cylinder; a piston in said cylinder; a support in which said cylinder is reciprocably mounted; two systems to be actuated; means for establishing communication between one of said systems and said cylinder through said piston; means for establishing communication between the other of said systems and said cylinder; means for reciprocating said piston relative to said cylinder; and valve means associated with each of said communication means for enabling fluid to be entrapped in one of the systems for selectively actuating said systems when said piston and cylinder are selectively reciprocated relative to each other.

6. A mechanism for selectively actuating a pair of pressure fluid systems comprising a cylinder; a piston in said cylinder for forming a chamber for uid and movable in said cylinder for developing pressure in the fluid in the chamber; two motors; means for establishing communication between one of said motors and said chamber; a valve in said means; a second means for establishing communication between the other of said motors and said chamber; a valve in said second means; means for relatively moving said piston and said cylinder for positioning the valve in said first mentioned means for enabling pressure fluid to fiow to and actuate the motor in said first mentioned means and positioning the valve in said second means for preventing pressure uid iiowing from said chamber; and other means for relatively moving said piston and said cylinder for positioning the valve in said second means for enabling pressure fluid to flow to said motor in said second means and positioning the valve in said iirst mentioned means for preventing pressure fiuid flowing from said chamber.

7. A mechanism for selectively actuating a pair of pressure uid systems comprising a cylinder; a piston in said cylinder for forming a chamber for iiuid therein and movable in said cylinder for developing pressure in the fluid in the chamber; a fluid reservoir; means in said reservoir in which said cylinder is reciprocably mounted; two motors; a first means for establishing communication between one of said motors and said chamber; a valve in said first means; a second means for establishing communication between the other of said motors and said chamber; a valve in said secvond means; means for relatively moving said preventing pressurefiuid owing from said chamber to said reservoir; and other means for relatively moving said piston and said cylinder for positioning the valve in said second means for enabling pressure fluid to ow to said motor in said second means and positioning the valvel in said first means for preventing pressure fluid flowing from said chamber into said reservoir. ARTHUR N. MILSTER.

REFERENCES CITED The following referefnzces are of record in the file of this patent:

5 UNITED STATES PATENTS Number Name Date 1,682,781 Gardner Sept. 4, 1927 2,167,929 Johnson Aug. 1, 1939 

